Key Highlights

● Aehr sank in premarket trading on Friday, October 30, 2026.

● Semiconductor stocks fell after Intel's disappointing guidance.

● Aehr makes test and burn-in equipment for chips.

● Its sales depend on chipmakers' Capital spending.

Aehr Test Systems (NASDAQ:AEHR) sank in premarket trading on Friday, October 30, 2026, as semiconductor stocks fell sharply after Intel (NASDAQ:INTC)'s disappointing fourth-quarter guidance. The decline showed up in market 6:30 a.m. Eastern snapshot of premarket movers, well before the opening bell. No company-specific news was found; the stock moved with the chip selloff.

Aehr, a Russell 2000 member based in Fremont, California, makes test and burn-in equipment used to screen semiconductors for reliability, including silicon carbide chips used in electric vehicles and devices used in AI data centers. Because its sales depend on chipmakers' spending plans, its shares tend to react quickly to news that changes the outlook for the industry.

Intel's warning

Intel set the tone late Thursday. The company guided fourth-quarter Revenue to $15 billion to $16 billion, against analyst expectations of roughly $17.1 billion to $17.3 billion, and forecast adjusted Earnings of $0.25 a share, well below estimates. It warned of cash burn this year, citing a weak PC market tied to memory prices and availability, Manufacturing hurdles and heavy production spending. Market reports said that an explosion at its Kiryat Gat fab in Israel cut fourth-quarter revenue by about $300 million.

"In recent weeks, our customers began signaling a PC slowdown based on the memory prices and availability," chief executive Lip-Bu Tan said on the call, according to market data. Cantor Fitzgerald analyst C.J. One analyst called the guidance "a perfect storm." Intel closed at $65.76, in what market reports described as the steepest one-day drop on record.

Test and equipment names fall

The damage spread across the chip Supply chain. The Philadelphia Semiconductor index fell to 10,688.80. Equipment makers Applied Materials (NASDAQ:AMAT) and Lam Research (NASDAQ:LRCX) sold off on doubts about AI-related capital spending, and ASE Technology, a chip packaging and test company, fell in premarket trading with the sector. Semtech and MaxLinear also dropped without company-specific news.

Broader AI hardware names were hit too. Nvidia (NASDAQ:NVDA), Advanced Micro Devices (NASDAQ:AMD) and Broadcom (NASDAQ:AVGO) fell, as did Arm Holdings (NASDAQ:ARM). Sandisk (NASDAQ:SNDK) tumbled despite beating expectations, as investors worried that memory pricing was peaking.

The wider market

Stocks overall had their worst day since June. The S&P 500 fell 140.32 points to 7,580.07, the Dow Jones Industrial Average lost 572.25 points to 51,770.31 and the Nasdaq Composite dropped 747.73 points to 25,437.00, its worst day since June 5. The Russell 2000 declined 47.37 points to 2,811.84. Technology was the weakest sector by a wide margin, while energy, consumer staples, utilities and health care gained.

Amazon (NASDAQ:AMZN)'s results added to concerns about AI spending: its trailing 12-month free Cash Flow was negative $42.4 billion. Oil above $100 a barrel and market bets on a December rate hike from the Federal Reserve also weighed on growth stocks.

What to watch

For Aehr, the key question is whether the chip selloff proves a one-day shock or the start of a longer pullback in semiconductor spending expectations. With no company-specific news, the stock's next moves may track the sector and any updates from chipmakers about their capital plans.

Intel said it sees the PC slowdown lasting at least through the first half of 2027, a view investors will test against other companies' reports. Qualcomm (NASDAQ:QCOM) reports on Wednesday, November 4, and Super Micro Computer (NASDAQ:SMCI) on Tuesday, November 3. The midterm elections on November 3 and the October jobs report on Friday, November 6, round out a busy week.